Reviewers mostly praise Preply for what happens in the lesson: a large choice of tutors, easy scheduling, a smooth built-in classroom, and personalized teaching that helps learners make real speaking progress. Several users also like features such as tutor intro videos, notes, and post-lesson insights. The main complaints are not about learning quality but about platform policies and support: refunds and unused balances are a recurring pain point, subscriptions and lesson expiry can feel tricky, and some users and tutors report slow or unhelpful customer service, billing disputes, cancellations, and weak tutor protection.